Comparison of the calibration of advanced staring FPA sensors to radiometric imaging IR sensors

Paul D. Lavallee; Lucinda K. Griner; Eric J. Borg; Joseph G. Parker

doi:10.1117/12.210046

22 May 1995 Comparison of the calibration of advanced staring FPA sensors to radiometric imaging IR sensors

Paul D. Lavallee, Lucinda K. Griner, Eric J. Borg, Joseph G. Parker

Proceedings Volume 2470, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VI; (1995) https://doi.org/10.1117/12.210046
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

Traditionally single detector radiometric cameras have been employed to characterize target and background signature statistics during field tests. In the case of captive flight testing, several problems are encountered with this technique such as the limited availability and added cost of a stabilized radiometric camera payload and the undesirable scanning effects resulting from the moving platform. To overcome these problems during previous captive flight tests (CFTs) of imaging infrared (IIR) staring seekers, target and background temperature statistics have been extracted directly from the digitized seeker imagery and calibrated using blackbodies positioned in the field during the test. The question of how results of this method compare to those of the traditional method of using a single detector, radiometric system should be answered to evaluate the accuracy of the calibration achieved. During a CFT conducted at Redstone Arsenal, Huntsville, Alabama during July 1994, a pair of IIR, focal plane array (FPA) seekers were captive flight tested and signature statistics were extracted from the imagery. As a point of comparison, imagery was coincidentally collected using Agema 780 IR radiometers during a single mission. Calibration was performed by using large surface blackbodies placed adjacent to the target so as to appear in the field of view of the sensors as the target was being imaged. This paper presents the results of the comparison between the seeker and radiometer calibrations in both the mid-wave IR (MWIR) and long wave IR (LWIR) spectral bands. The results have application and relevance to IIR model validation through field testing.

Citation Download Citation

Paul D. Lavallee, Lucinda K. Griner, Eric J. Borg, and Joseph G. Parker "Comparison of the calibration of advanced staring FPA sensors to radiometric imaging IR sensors", Proc. SPIE 2470, Infrared Imaging Systems: Design, Analysis, Modeling, and Testing VI, (22 May 1995); https://doi.org/10.1117/12.210046

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KEYWORDS

Staring arrays

Calibration

Black bodies

Sensors

Cameras

Long wavelength infrared

Mid-IR

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